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3.4
Output Circuits
Notification Appliance Circuits
The MRP-4424 can provide two Style Y/Z Notification Appliance Circuits and two Style Y Releasing
Circuits (see section "Setting MRP-4424 Mode of Operation" for DIP switch configuration). Each circuit
is capable of 1.5 amps of current. Total current drawn from all four circuits cannot exceed 2.25 amps.
Refer to the Device Compatibility Chart. Circuits are supervised and power-limited.
Note: Wiring must be configured to maintain a minimum voltage of 20.4V on release circuits. Calculation of
Where: R
Polarized Bell
Polarized Strobe
Polarized Horn
Technical Manuals Online! - http://www.tech-man.com
maximum allowable resistance:
= maximum allowable resistance of wiring
MAX
Style Z
Notification
Appliance Circuit
B+ A+
A-
3
4
5
TB2
OUT #1
Dummy Load all unused Notifi-
cation Appliance Circuits
4.7K, 1/4-Watt
UL-listed End-of-Line device
B+ A+
A-
Figure 3.4-1: Notification Appliance Circuits
MRP-4424
firealarmresources.com
R
= 20.6V- 20.4V
MAX
I
S
Style Y Notification
Appliance Circuit
4.7K, 1/2-Watt
UL listed End-of-Line
device
B-
B+
A+
A-
B-
NC
6
7
8
9
10
11
OUT #2
OUT #3
Dummy Load all unused
Releasing Circuits
B-
B+
A+
A-
B- B+
Document 15180
Rev D
03/12/97
15180:D
I
= solenoid current
S
Releasing
Circuits
UL listed &
FM approved
Releasing
Devices
B+
B- NC
B+
B-
12
13
14
15
16
OUT #4
4.7K, 1/4-Watt
UL-Listed End-of-Line device
B-
B+
17
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